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參數(shù)資料
| 型號(hào)： | ICE3BS02G |
| 廠商： | INFINEON TECHNOLOGIES AG |
| 英文描述： | Off-Line SMPS Current Mode Controller with integrated 500V Startup Cell |
| 中文描述： | 離線式開關(guān)電源電流模式控制器，集成了500V啟動(dòng)單元 |
| 文件頁數(shù)： | 15/23頁 |
| 文件大?。?/td> | 476K |
| 代理商： | ICE3BS02G |
F3
ICE3AS02 / ICE3AS02G / ICE3BS02 / ICE3BS02G
Functional Description
Version 1.1
15
21 May 2004
Once the Auto Restart Mode is entered, the internal
Voltage Reference is switched off in order to reduce the
current consumption of the IC as much as possible. In
this mode, the average current consumption is only
300
μ
A as the only working block is the Undervoltage
Lockout(UVLO) which controls the Startup Cell by
switching on/off at V
VCCon
/V
VCCoff
.
As there is no longer a self supply by the auxiliary
winding, VCC starts to drop. The UVLO switches on the
integrated Startup Cell when VCC falls below 8.5V. It
will continue to charge VCC up to 15V whereby it is
switched off again and the IC enters into the Start Up
Phase.
As long as all fault conditions have been removed, the
IC will automaticlally power up as usual with switching
cycle at the GATE output after Soft Start duration. Thus
the name Auto Restart Mode.
Other fault detections which are active in normal
operation is the sensing for Overload, Open Loop and
VCC undervoltage conditions. In the first 2 cases, FB
will rise above 4.8V which will be observed by C4. At
this time, S1 is released such that V
SoftS
can rise from
its earlier clamp voltage of 4.4V. If V
exceeds 5.4V
which is observed by C3, Auto Restart Mode is entered
as both inputs of the gate G5 are high.
This charging of the Soft Start capacitor from 4.4V to
5.4V defines a blanking window which prevents the
system from entering into Auto Restart Mode un-
intentionally during large load jumps. In this event, FB
will rise close to 6.5V for a short duration before the
loop regulates with FB less than 4.8V. This is the same
blanking time window as for the Active Burst Mode and
can therefore be adjusted by the external C
SoftS
.
In the case of VCC undervoltage, ie. VCC falls below
8.5V, the IC will be turn off with the Startup Cell
charging VCC as described earlier in this section. Once
VCC is charged above 15V, the IC will start a new
startup cycle. The same procedure applies when the
system is under Short Optocoupler fault condition, as it
will lead to VCC undervoltage.
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PDF描述 |
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| ICE3BS02L | Off-Line SMPS Current Mode Controller with integrated 500V Startup Cell and Latched off Mode |
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| ICL3221 | One Microamp Supply-Current, +3V to +5.5V, 250kbps, RS-232 Transmitters/Receivers(1微安電源電流, +3V至+5.5V, 250kbps, RS-232收發(fā)器) |
| ICL3222 | One Microamp Supply-Current, +3V to +5.5V, 250kbps, RS-232 Transmitters/Receivers(1微安電源電流, +3V至+5.5V, 250kbps, RS-232收發(fā)器) |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ICE3BS02GXT | 制造商:Infineon Technologies AG 功能描述:Current Mode PWM Controller -0.3V to 22V 700mA 8-Pin DSO |
| ICE3BS02L | 功能描述:電流型 PWM 控制器 OFF-LINE SMPS CRRNT MODE CONTROLLER RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
| ICE3BS02LXK | 制造商:Infineon Technologies AG 功能描述:Current Mode PWM Controller 8-Pin PDIP |
| ICE3BS02XK | 制造商:Infineon Technologies AG 功能描述:Current Mode PWM Controller -0.3V to 22V 700mA 8-Pin PDIP |
| ICE3BS03LJG | 功能描述:電流型 PWM 控制器 OFF-LINE SMPS CRRNT MODE CONTROLLER RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
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